Your browser version is outdated. We recommend that you update your browser to the latest version.

Bathymetric Surveys

Lewandowski Engineers performs Bathymetric Surveys to determine water depth, silt bed and hardpan elevations via a multi-beam echo sounder tethered to RTK GPS.  Detailed geo-spatial data can be incorporated into an ESRI-GIS format and combined with Civil3D modeling platforms to locate scours, sediment accretion and calculate volumes for dredging as well as ODNR compliance for dock, breakwater and bulkhead permitting.

Vessels include the 22’ center console shallow draft Sailfish “SeaVeyor” rigged for detailed assessment along the shores of Lake Erie and the banks of the Maumee River.  Smaller aluminum hull boats and inflatables provide access to shallow waters, ponds, reservoirs and fire ponds.


Bathymetric Survey of the Maumee River at the Toledo Marina District for the MetroParks.


SeaVeyor 20 – 22 on Lake Erie near Oregon, Ohio